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Finding the Fourth Proportional to 571,119.30, 788,144.64 and 316,470.48

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Solution

The fourth proportional to 571,119.30, 788,144.64 and 316,470.48 is: 436,729.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,119.30 : 788,144.64 = 316,470.48 : x
  2. Step 2: Convert to fraction form
    571,119.30/788,144.64 = 316,470.48/x
  3. Step 3: Cross multiply
    571,119.30x = 788,144.64 × 316,470.48
  4. Step 4: Simplify right side
    571,119.30x = 249,424,512,530.23
  5. Step 5: Solve for x
    x = 249,424,512,530.23/571,119.30
  6. Step 6: Final answer
    x = 436,729.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.